| Main Entry: | |
| Part of Speech: | noun |
| Definition: | center, focal point |
| Synonyms: | core, focus, heart, middle, nerve center, pivot, polestar, seat |
| Antonyms: | exterior, exteriority, outside |
| Main Entry: | key |
| Part of Speech: | noun |
| Definition: | answer, solution |
| Synonyms: | blueprint, brand, cipher, clue, code, core, crux, cue, earmark, explanation, fulcrum, guide, hinge, index, indicator, interpretation, lead, lever, marker, means, nexus, nucleus, passport, password, pivot, pointer, root, sign, symptom, ticket, translation |
| Antonyms: | question |
| Main Entry: | nucleus |
| Part of Speech: | noun |
| Definition: | core; basis for something's |
| Synonyms: | beginning bud, center, crux, embryo, focus, foundation, germ, heart, hub, kernel, matter, nub, pivot, premise, principle, seed, spark |
| Antonyms: | exterior, exteriority, outside |
| Main Entry: | oscillate |
| Part of Speech: | verb |
| Definition: | change back and forth |
| Synonyms: | be unsteady, dangle, fishtail, flicker, fluctuate, librate, lurch, palpitate, pendulate, pitch, pivot, reel, ripple, rock, roll, seesaw, stagger, sway, swing, switch, swivel, teeter, teeter-totter, thrash, toss, totter, undulate, vacillate, vary, vibrate, waddle, wag, waggle, waltz, wave, waver, whirl, wiggle, wobble |
| Notes: | oscillate means to be undecided about something or regularly swing from side to side, while osculate means to kiss or to come together - in mathematics it means to have three or more points coincident with |
| Antonyms: | remain, stay |
| Main Entry: | roll |
| Part of Speech: | verb |
| Definition: | revolve, turn; proceed smoothly |
| Synonyms: | alternate, be in sequence, bowl, circle, circumduct, coil, curve, drape, drive, eddy, elapse, enfold, entwine, envelop, flow, fold, follow, furl, go around, go past, gyrate, gyre, impel, pass, pirouette, pivot, propel, reel, rock, rotate, run, spin, spiral, succeed, swaddle, swathe, swing around, swirl, swivel, trundle, twirl, twist, undulate, wheel, whirl, wind, wrap |
| Main Entry: | rotate |
| Part of Speech: | verb |
| Definition: | go around in circle |
| Synonyms: | circle, circumduct, circumvolve, gyrate, gyre, move, pirouette, pivot, reel, revolve, roll, spin, swivel, troll, trundle, turn, twirl, twist, waltz, wheel, whirl, whirligig, whirr |
| Notes: | revolve and rotate are synonyms in everyday writing, but not in scientific/technical writing: the Earth revolves around the Sun and rotates upon its axis |
| Main Entry: | round |
| Part of Speech: | verb |
| Definition: | turn; encircle |
| Synonyms: | begird, bypass, circle, circulate, circumnavigate, compass, encompass, flank, gird, girdle, go around, gyrate, hem, pivot, revolve, ring, roll, rotate, skirt, spin, surround, wheel, whirl |
| Main Entry: | swing |
| Part of Speech: | verb |
| Definition: | move back and forth; be suspended |
| Synonyms: | avert, away, be pendent, curve, dangle, deflect, divert, flap, fluctuate, hang, lurch, oscillate, palpitate, pendulate, pitch, pivot, reel, revolve, rock, roll, rotate, sheer, shunt, suspend, sway, swerve, swivel, turn, turn about, turn on an axis, twirl, undulate, vary, veer, vibrate, volte-face, wag, waggle, wave, wheel, whirl, wiggle, wobble |
| Main Entry: | swivel |
| Part of Speech: | verb |
| Definition: | spin around axis |
| Synonyms: | hinge, pirouette, pivot, revolve, rotate, swing around, turn, whirl |